Gas-burner.



v O. SPAHR.

GAS BURNER. 'APPLICA-non man omai, |913.

1,242,487. 'Patented 0ef..9,519 17,

TUN-TTR@ STATES PATENT @TTTQEQ *oTTosPAHitoFPnInADELrHiA,yPENNsa/ut.'validita,'assIefNoia Tov-srnnusn eas inoNVG0.,for.ummmELM-1:11a, PENNSYLVANIA; n coR-Pesa-ATIQN orruint-sari.1v,ANIA,v

'1 ens-BRNER.

Tor-@ZZA wh'mizbz't mag/concern: y v

Be'fitknown thatfI, OTTO SPAHR, a cit1- vSpecicaton of Letters Patent.AAppiication,meaDecember si, 1913; .seiiaiNasoafea atentea eene, i917.

tending lengthwise thereofas shown in "Fig;

. My invention rela-testo gas burners and t V,more especially to:ygasrbu'rners for selffheating gas ironsandthe'likeandhas for' its objectto produce asuperior burner'` of this kind, one whichxwillinsurecomplete combustion, without odor for loss of heat, of the i, gas usedandV which will. be suitable for use -with lanykind ofgas, :whethernatural or l manufactured. It is a further object of my Y drawings.

structure. that the amef jets issuing'from the flame apertures thereofwill be affected to a Nminimum degree by excess air in the gas, byexternal atmospheric ydrafts or'V by my invention shown in:'the-'accompanying with my improvement applied thereto ;V Fig'.

2 is a cross-section 'thereof on the'line 2-2 f of Eig 1; Fig. 3 Vis arear endel'evation;

7 lisV an: enlarged cross-section-ofx the ner as lby v means of alocking lever 13. The side walls of the body may also be cut awaylburner and Fig, f5Y is a 'detail view of a slightly differentY form 'ofburner. n lInthe drawings A10 represents'the hollow body of the ironwhich maybe provided drawings' Fig-ure 1 is a side eleva- `tionY ofalgas :iron with parts 1n section and i Y1.. thel form illustratedv in Fig's: '1,2l and'3, they burner comprises a tube18 having'fits forward.fendv externally screw-threaded' Y as indicated at 19l and its rear endinternally screw-threaded to receive the exfternallyj screw-threaded`end of the Vmixing tube 120. 'lThe said.- mixing tube Khas its lfreeVend provided j with 'thefcustomary .nipple2l having the usual air`inlets 22and upon which the usual customary fexible- '-hose orv tubelfor connecting theiro'n with a ."s'lipp'ed.,`- A locknut 23 is located#on the .invention to produce such a gas iron burner K externallyscrew-threaded 'end ofthe tube 20and is.arranged to'be screw-ed intoengagement with the end of the tube 18u/hereby thesai'dtubes 18 and 20are firmly locked with the usual cover'y 1l movable relatively thereto'and having a the customary operating handle 12 ofY anyl desiredvtype'for manipuflatingthe iron, the said cover being locked in position onthe body in any suitableman- Y at the top to' form 'Ventilating`apertures 14;V

along the sides andthelrear wall 15 may be similarly cut away at the topto form 'ven- `tilating,apertures 15*V at the rear end 'of' the.

iron. 'Asshown thefbody' 10 is provided with air inlet channels 16vwhich. extend through the solid bottom' 10a and' have? their f innerends communicating with. .the interior of the body in `any suitablemannery as' for instance throughthe medium of a well or -recess 17formed in said 'bottom' 1()a and exj,

together. The'tube 18 is formed with a *double series of Aradiallyextending jet apertures "24` located on yopposite s'idesyof thelongitudinal :center line `of said tube 18 and being of relatively largesize and having their inner-ends covered Vwith netting, gauze, or thelike25.y Asshown in the illustrated example `4the netting vor gauze "25is in; the-form :of a continuous tube which' isvfinserted :intov'the'tube-18 and is :held in position .therein in any 'suitable man-'nen asfby friction, itbeing understoodthat other forms ofy netting orgauze-may be used,1 or that the apertures- 24' may 1 be separatelycovered, with individual? sections of netting or gauze :onthe insideifthis should be desired.y l'

iWhen lconnected Vvwith `the body the tube 18 of the burner extends4through aan opening 4126 located Vinthe rear Vwall 15- andhas itsscrew-'threaded forward end19screwed into a screwt'hread'ed recess 19aformed inthe forward end of said body. The jet-apertures'24 arefthusfalllocated within the body asshowninIFig. 1, and themixingtube 20.is'locat'ed exteriorly thereof andlis preferably inclined relatively tosaid body when viewed' from'the front or rear end. l. The opening'26andthe recess 19a are so located 4Vthat the tube 18 will be located aboveand in registryl with the well v17 orthe like, when the burner-isconnected withtheb'ody as described above. In addition to. this; thevrear wall 15 is `providedy with an enlarged recess 26?L'whichsurrounds'1 the opening 26 and is adapted to; receive the locknut23 when the burner'j is in f its operative position. AWY/'ith andaround which the air entering through the channels 16 into the well 17or the like is forced to pass, thus insuring perfect comi bustion and amaximum heat effect with a minimum of fuel. rlhe said large flames arecaused to firmly adhere to the burner tube 18 even with said largeapertures 24C as the interstices of the netting 2 5 are smaller thansaid apertures and said netting thus provides an effective foundation orhold for said iames and maintains them in the desired operative relationto the burner. In addition to this the roots of the various flame jetswill belocated closely adjacent to the netting or gauze 25 and will inconsequence be protected by the walls of the jet apertures 24 so thatthe said jets of flame are not likely to become extinguished andareaected to a minimum degree by excess air in the gas, and by externalatmospheric drafts or the like. The said gauze or netting also serves tofilter the gas, thus resulting in a clean flame and making it possibleto use the iron with either manufactured or natural gas without changeor substitution and furthermore absolutely prevents backfire. Theconstruction shown and described also permits use-of the iron with anytype of gas at any pressure without necessitating any special adjustmentor the substitut-ion of any special parts. By constructing the nettingor gauze 25 in the form of a tube or the like the same may bemanipulated to bring different parts thereof into registry with the jetapertures 2e so that as one part of the netting or gauze becomes cloggedor unserviceable, another clean part may be adjusted over the saidapertures, thus doing away with the necessity for frequent cleaning orrenewals of the gauze or netting.

By screwing the tube 20 into the tube 18 a shoulder 2Oa is formed insaid burner tube 18 against which the one end of the netting, gauze orthe like 25 may abut. With this construction the inner surface of saidnetting or gauze 25 is substantially flush with the inner surface of thetube 20 so that a free path for the fuel into said burner tube 18 isprovided. In other words the end of the netting, 25, with thisarrangement does not form an obstruction in the path of the fuel and inconsequence friction is reduced to a minimum. An additional shoulder 20bmay be formed in any suitable manner in the upper portion of the tube20, the dianieter of the combined tubes 18 and 2O thus increasing insuccessive steps from the inlet end on and still further insuring aproper forward travel of the fuel by removing all obstructions from itspath and consequently reducing frictionto a minimum. itiqaerience withburners of the type included in the present case has shown that the fuelas it enters the burner tube when the latter is cold will force andcompress itself into the extreme forward end of the burner tube in Fig.1 thus ordinarily tending to exert a back pressure at least at the firstfew apertures 24:. `With the present construction, as the burner tubebecomes heated and thereby heats the accumulated fuel therein, the saidfuel expands rearwardly alone` the entire tube 1S until it:

reaches the vshoulder 20a through the inter-- Thisv stices or meshes ofthe gauze 25. shoulder in combination with the forward portion of theiron which closes the forward end of the tube 18 confines this expandedfuel and as new fuel is continually added and becomes similarlyexpanded, preserves an equal pressure or in other words equalizes thepressure at all of the apertures 24. Perfect and uniform flames are inthis manner provided at each aperture 24 and result in a uniform orequal heating of the iron throughout.

In the burner shown in Fig. 5 the tubes 18a and 2OC are made integral orin one piece instead of separately as are the tubes 18 and 2O in thefirst form, the two forms being otherwise identical.

Various changes in the specic forms shown and described may be madewithin. the scope of the. claims without departing from the spirit of myinvention.

l claimz- 1. A burner for self-heating gas irons and.

- the like comprising a horizontal burner tube having jet apertureslocated only in its lower half, a mixing tube arranged to screw into theone end of said burner tube and forming an annular shoulder therein, alock-nut adapted to engage the end of said burnertube whereby saidburner and mixing tubes are locked together and'foraminated means insaid burner tube covering the inner ends of the said jet apertures andabutting against said shoulder whereby obstruction to the flow of thefuel is prevented.

2. A self-heating gas iron comprising a hollow body having an opening inits rear wall and an enlarged recess surrounding same, an aperturedburner tube extending through said opening into said body, a mixing tubearranged to screw into one end of said burner tube and a lock nutadapted to engage the end of said burner tube whereby said burner andmixing tubes are locked together, said lock-nut being adapted to be received in said enlarged recess whereby the 4said lock-nut is protectedagainst interference.

3. A self-heating gas iron comprising a hollouT body having an openingin its rear wall and an enlarged recess surrounding same, a burner tubeextending through said opening and having a double series of radi- .allyextending jet apertures, a mixing tube arranged to screw into one end ofsaid burner tube and forming an annular shoulder therein, a lock-nutadapted to engage the end of said burner tube whereby said burner andmixing tubes are locked together, said lock-nut being adapted to bereceived insaid i enlarged recess whereby the vsaid lock-nut isprotected against interference and foraminated means in said burner tubeextending over the inner ends of al1 of said jet apertures.

In testimony whereof, I have hereunto set my hand in the presence of twosubseribing witnesses.

' OTTO SPAHR. Vitnesses :y

JOHN A. KEHLENBECK, FRED A. KLEIN.

Copies of this patent may be obtained for ve cents each, by addressingthe Commissioner of Patents,

` Washington, D. C.

